Classification attempts to impose a hierarchy on the complex and dynamic variety of life on Earth by describing how different species group together and how they are related to one another or not.

Wherever it is, it must be the place where synurbization—the process of wildlife adapting to urban environments—originated.

A new study used modern methods to reassess a foundational study in biology that explained how ecologically similar species of wood warblers coexist. The research team examined foraging behavior, ...

Find out the different ways scientists have of describing what ... deer species such as the sika and roe are considered separate as they can’t have fawns together. While some closely related species, ...